2.2: Set INTERFACES=”” to the name of the network interface that you want to enable the DHCP server on:

INTERFACES="eth0"

3.1: Edit the DHCP server configuration:

sudo nano /etc/dhcp/dhcpd.conf

3.2: The contents of my configuration file, for me the comments already in the file was what I needed to make the necessary changes:

# The ddns-updates-style parameter controls whether or not the server will
# attempt to do a DNS update when a lease is confirmed. We default to the
# behavior of the version 2 packages ('none', since DHCP v2 didn't
# have support for DDNS.)
ddns-update-style none;
# option definitions common to all supported networks...
option domain-name "home.lan";
option domain-name-servers ubuntu.home.lan;
default-lease-time 600;
max-lease-time 7200;
# If this DHCP server is the official DHCP server for the local
# network, the authoritative directive should be uncommented.
authoritative;
# This is a very basic subnet declaration.
subnet 192.168.0.0 netmask 255.255.255.0 {
range 192.168.0.100 192.168.0.200;
option routers router.home.lan;
}